Rain lily (Zephyranthes drummondii) is a deciduous perennial that will grow from 15 to 46 cm tall. It produces dainty white flowers that open in the evening. Blossoms last from two to four days. It is an excellent choice for a night garden. Flowers are fragrant and attract bees and butterflies.
I. Appearance and Characteristics
Zephyranthes drummondii, commonly known as Evening rain lily, evening star rain lily, giant rain lily, hill country rain lily, prairie lily, or rain lily, is a perennial species of flowering plant in the amaryllis family.
It is found in Florida, Texas, Louisiana and northeast Mexico from elevations of 0 to 900 meters from sea level. It grows in sandy or rocky, usually calcareous soils.
It is a perennial herb that grows 16 to 45 cm (6.3 to 17.7 in) tall. The leaf blades are glaucous-green, and are up to 8 mm (0.31 in) wide. The spathe is 3–5 cm long. The flowers are erect; the funnel form perianth is 6 to 9 cm (2.4 to 3.5 in) long and is white, sometimes “flushed pink abaxially”. The perianth tube is white to green, and is 3 to 4.7 cm (1.2 to 1.9 in) long. The petals are rarely reflexed. The stamens are fasciculate, and are distinctly subequal. The filaments are subducted, and are 0.1 to 0.2 cm long. The anthers are 5 to 8 mm (0.20 to 0.31 in) long.
It flowers from March to August.
II. How to Grow and Care
Rain lily is known for its low maintenance and adaptability which makes it an easy-care plant. A key care point is ensuring adequate moisture during blooming periods, though rain lily is drought-tolerant once established. It’s also important to plant rain lily in well-draining soil to prevent bulb rot. Due to its resilience and minimal care requirements, rain lily is well suited for gardeners of all skill levels.
Sunlight
Rain lily grows best in areas with full sun. However, it will tolerate partial shade in warmer climates that experience a longer summer.
Temperature
Rain lily is fairly hardy but won’t survive the winter in regions where temperatures reach below 12 ℃.
Rain Lilies are only hardy to zones 7-10. Therefore, in cooler areas, their bulbs will have to be dug up before the first frost and stored indoors over the winter in a cool, dry place before being replanted in spring. If grown in pots or containers, they should also be overwintered in a cool, frost-free location with just enough moisture to keep the soil from totally drying out.
Watering
Rain lily thrives in its native environment where it experiences regular hydration, indicative of a preference for consistent moisture. This species is known for its moderate drought tolerance but flourishes when maintained with a balance of humidity and soil moisture. Watering should occur once every week to sustain its health and vigor. Rain lily is ideally suited for outdoor cultivation, where it can capitalize on natural rain patterns, enhancing its flowering potential and aligning with its growth cycles.
Soil
Rain lily tolerates a wide range of soil conditions. It can be grown in dry, sandy soil or moist, clay soil. The plant thrives in soil that has a neutral to slightly acidic pH, around 7 or slightly below is ideal. Moderately fertile soil is fine for your rain lily.
Fertilizing
To foster robust growth and vibrant blooms in rain lily, opt for high phosphorus fertilizers, which bolster root development and flowering. Applying a diluted solution monthly during the growth season enhances plant vigor and bloom quality. Refrain from over-fertilizing; excessive quantities can harm rain lily, causing foliage burn or growth inhibition. As rain lily enters dormancy in cooler months, reduce fertilization to prevent unnecessary stress. For safe application, ensure soil is moist and distribute evenly around the plant’s base. Monitoring rain lily’s response to feeding will guide suitable adjustments, catering to its specific nutritional needs for optimal health.
Pruning
Rain lily doesn’t require pruning to thrive. If desired, you can trim back foliage after it has completely died back in the fall.
Propagation
Derived from the Amaryllidaceae family, this perennial bulb is effectively propagated through division. Gardeners can encourage growth by gently separating the bulbs, ensuring each division contains part of the root system and one or more bulbs. For optimal results, replant the divisions immediately, nurturing them in well-draining soil with adequate sunlight. Regular watering, without over-saturation, supports healthy development. With attentive care, rain lily will thrive and grace gardens with fresh blooms.
Transplanting
Optimal time to relocate rain lily is when spring’s warmth graces our gardens. Choose a spot with dappled sunlight and good drainage to welcome rain lily. Gentle guidance roots them into their new home, ensuring a seamless transition to robust growth.
III. Uses and Benefits
Rain lily is spectacular when planted in great swathes along paths. It is good candidate for border fronts, rock gardens and containers.
